Fountain pen cap and ink guard



April 18, 1933.

s. M. sAGi-:R 1,904,014

FOUNTAIN PEN CAP AND INK GUARD Filed May 4, 1931 6 Z :f/ '25 JZ & eri-@wi" Z5 "ya EQ- Z 5 Z311 JZ H Z 47 i 1725 l I .g, i Q q u .7 Jl pil-:ISMyz j/ yjgJZ/l' 5050775073 77E. Sqzje? Patented Apr. 18, 1933 UNITEDSTATES SOLOMON IVI. SAGER, OF VGrLEN'COE,'ILLINOIS Y FOUNTAIN PEN CAPAND INK GUARD Application led May 4, 1931. y Serial `.To.3B4,79 1.fV

Heretofore in the construction of fountain pens it has been the usualpractice to pro-vide a barrel having removably secured in one endthereof a fountain pen section for supporting a feed bar and a penpoint. In other types of fountain pens the feed bar and pen point arenormally adapted to be enclosed by means of a cap which usually isprovided with an internally threaded portion which is adapted to bethreaded onto an externally threaded portion provided around theexterior of the fountain pen barrel. It has been found in the ordinarytype of fountain pen that when the fountain pen is not in use and thewriting end thereof is enclosed by a fountain pen cap, that excess inkremaining in the feed bar and on the pen point accumulates around theouter end of the section with the result that the excess ink leaks offlof the section and collects in the fountain pen cap. Due to the leakageof inlr from the end of the section into the fountain pen cap, theinterior of the cap and the exterior of the section usually becomestained with the excess ink so that when the fountain pen is again used,the hands of a user become stained with the excess ink. For the purposeof obviating the leakage of excess ink from the feed b-ar and pen point"o present invention has been devised to provide a simplified form offountain pen wherein the section forms an integral part of one end ofthe barrel and has the endthereof formed to provide a chamberedinternally threaded and beveled ink guard. The ink guard is soconstructed that it is adapted to removably receive the externallythreaded and beveled shank portion of a fountain pen cap or cap linerengaged therein to enclose the writing a end of thefountain pen. The'fountain pen barrel has the outer end thereof so constructed to permitthe externally threaded and beveled portion of the cap to be removablyengaged 4 therein to hold the c( p in position when the e fountain penis opened for use.

It is an object of this invention to provide an improved fountain penwherein the barrel and section are integral and wherein both ends of thebarrel are constructed for receiving' therein a portionof a cap orclosure memto the exterior of the fountain pen section, the

- end of the barrel. Y

ber for retaining the cap in position on either end lof the barrelwithout requiring external threading of the barrel or internal threadingof the cap as has been the practice heretofore.

It is also an object of this invention to provide a fountain pen havinga body portion thereof so constructed to permit fone end or portion of aclosure cap to be engaged therein to afford a locking fit therewith toobviate leakage of ink from 'the Writing end ofthe fountain pen totheexterior of the barrel or cap.

It is a further object of this invention to provide a fountain penwherein the cap is providedwith an externally threaded portion which isadapted to be threaded into an internally threaded ink guard provided atone end of the fountain pen barrel or into an internally threaded recessprovided vin the opposite end of the fountain pen barrel by depressing anormallyclosed spring, controlled closure disk. y y Y It is furthermorean object of this invention to provide an improved fountain ypen whereinthe fountain pen barrel and section form an integral unit havinginternally threaded recesses in both ends thereof for the purpose ofremovably receiving anvexternally threaded fountain pen cap in either VIt is an vimportant obj ect of this invention to provide an improvedtype of fountain pen wherein the barrel and section form an integralunit and wherein the section end of the barrel is provided with aninternally threaded and beveled'ink guard forl receiving the externallythreaded and beveled end portion of a fountain pen cap tofenclose thefountain pen feed bar and pen pointto provide a nonleakable fountainpen, said fountain pen bar- Y rel having the outer 'end thereof providedwith an internally threaded 'recesshaving an end closure member thereinwhich is adapted to be depressed when the fountain pen cap is removedfrom the writing end of thebarrel and is engaged in the opposite endthereof. p

i Other and further importantobiects of this invention will be apparentfrom-the vdis-V closures in the specification and the accompanyingdrawing.

The invention (in a preferred form) is illustrated in the drawing andhereinafter more fully described.

On the drawing:

Figure 1 is a sid-e elevation of an 'improved fountain pen embodying theprinciples of this invention and showing the'cap in position on thewriting end of the fountain pen.

Figure 2 is an enlarged fragmentary longitudinal section of the fountainpen with parts shown in elevation and indicating in dotted lines theposition-of the cap inthe end of the barrel opposite the writing end.

Figure 3 is an outer end View of the fountain pen barrel taken on linelll-III of Figure 2. j

Figure 4 is a transverse detail section of the fountain pen taken online IV-IV of Figure 2.

Figure 5 is an enlarged fragmentary longitudinal sectional view ofthepen point end of a modified form of fountain pen equipped K with amodified form of cap.

' As shown on the drawing:

The reference numeral 1 indicates a fountain pen barrel, one end ofwhich is tapered to form an integral section 2. The barrel 1 is providedwith an ink chamber 3 which communicates Ywith an axial passage 4provid-ed in the section end 2 of the barrel. In the present showing ofthe fountain pen, the same is provided with a plunger filling mechanismdesignated as a whole by the reference numeral 5. y The outer end of thesection 2 is provided with an extension sleeve or collar 6 which servesas an ink guard member and is integrally formed -o-n the outer end ofthe body section Ato the outside of a bead or flange 7. rThe bead orflange 7 is integrally formed externally -on the outer end portion ofthesection 2 and serves to separate the section and the ink guard 6. Theink guard sleeve or collar -6 has the end thereof shaped or formed toprovide an inner beveled end surface 8, the inner end Vof whichterminates at the outer end of an internally threaded portion 9 providedin the ink guard.

Engaged in the section 2 and .projecting through the ink guard 6 is afeed bar 10 and a pen point 11. The internally threaded and beveled wallLof the ink guard 6 .is spaced from and surrounds the feed bar and penpoint to afford an excess ink chamber or recess to perv mit excess inkfrom the feed bar and pen point to How back into the ink'charnber 3 ofthe fountain pen when the fountain is positioned in an upright position,that is with the pen point pointed upwardly. v

In the present showing of the fountain pen, it will be noted that`thebarrel 1 and the sectionf2 forni an integral unit-and that :the

barrel and section in place of the old type of rfountain pen wherein thesection is a separate uni-t from the barrel.

For the purpose of enclosing the feed bar and pen point, a one piece lorunitary cap opposite or inner end is provided with an exterior tape-redor beveled surface 11i, the outer end of which terminates at the innerend of a reduced externally threaded shank portion or collar 15. Whenthe fountain pen is not in use,- the cap 12 is adapted to be threadedinto the ink guard 6 as clearly illustrated in Figure 2, with theexteriorly threaded portion 15 vof the cap having threaded engagementwith the interiorly threaded portion 9 of the ink guard. The cap isthreaded into the ink guard until the beveled surface 14- of the cap isbrought'into tight frictional engagement with the beveled surface 8 ofthe ink guard to provide a non-leakable joint between the ink guard andthe cap. In the present showing, the cap 12 is shaped so that theIexterior surface thereof is'flush with the exterior surface yof vthe inkguard 6 to provide a. smooth exterior surface to the outside o-f thebead or flange 7.

The plunger mechanism 5 has the stem thereof slidably projecting throughan externally threaded boss 16 and said plunger stem is pro-vided with avhead or lknob 17 to permit actuation thereof. For the purpose ofenclosing the plunger head 17, a head section is removably enga-ged onthe externally threaded boss 16. The head section comprises a tubularhousing or sleeve 18 having rigidly secured transversely therein apartition or dividing plate 19 to divide the interior of the head orsleeve 18 into a plunger head receiving chamber 2O and into an outerchamber Vor recess 21. The interior surface of the Vchamber 2O isthreaded to permit the sleeve or head 18 to be threaded onto theexternally threaded boss 16 .of the fountain pen barrel. The interiorsurface at the outer end of the outer chamber 21 o-f the sleeve 18 isinternally threaded at 22 for the removable reception of the externallythreaded shank orV collar 15 of the fountain pen cap Y12 as illustratedin dotted lines in Figure 2. It will thus be noted that when the cap 12is removed from the writing end of the fountain pen that the threadedend of the cap may be threaded into the interiorly threaded portion 22in the outer end of the fountain pen head section 18 for the purpose ofholding the cap in a definite position when the fountain pen is in use.

For the purpose of closing the outer end of the chamber 21 of the headsection 18, an end plate or closure disk 23 is slidably mounted in 'thechamber 21 'on a guide pin or stud 24 llt) which is rigidly securedaxially on the partition or dividing plate 19. Engaged around the pin orstud 24 between the closure disk 28 and the partition 19 is a coiledspring k25 which normally acts to resiliently hold the closure disk 23in its outermost position as illustrated in full lines in Figure 2 forthe purpose of closing the outer end of the fountain pen head section18. When the fountain pen cap 12 is removed from the ink guard section6, it is adapted to be mounted in the dotted lineposition illustrated inFigure 2 by causing the threaded shank orcollar 15 cap.

thereof to be threaded into the threaded portion 22 of the head section18, thereby causing the closure plate 23 to be slidably pushed into thechamber 21 against the action of the spring 25.

Figure 5 illustrates a fountain pen similar in construction to thatdisclosed in Figures 1 and 2 but having a modified form of The modifiedcap comp-rises an outer shell or casing 26 open at one end and closed atthe opposite end 27. The interior of theV outer cap or 'shell 26hasrigidly secured or wedged therein an improved inner cap or linercomprising an enlarged sleeve or body portion 28 having integrallyformed o-n one end thereof a closed reduced end section or head portion29. The inner sleeve or cap is formed to tightly fit within acomplementally shaped chamber provided in the closed end 27 of the outercap 26. The end of the inner cap opposite the closed end 29 is providedwith a tapered or beveled portion 30 which terminates in an ext-eriorlyAthreaded collar or shank portion 31 which is adapted` to beV threadedinto the interiorly threaded portion- 9 of the fountain pen ink guardsection 6. IVhen the outer cap is engaged over the section and barrel ofthe fountain pen, the inner cap is adapted to be threaded into theinteriorly threaded ink guard section 6 until the beveled surface 30 ofthe inner cap is brought into tight frictional contact with the beveledsurface 8 of the ink tion. Y

In the improved and modified form of fountain pen cap illustrated inFigure 5 it will be noted that the outer cap 26 is free from allinterior threading while the exterior of the fountain pen barrel is alsofree from exterior threading vfor receiving and holding the outer cap inposition. In the present instance, the interior of the outer cap and theexterior of the barrel are smooth and plain and the cap is retained inposition by means of the liner or innerY cap 28 which is adapted to bepositioned to project into the l fountain pen ink guard section 6 andtightly interl'it therewith so that a non-leaking joint is providedbetween the inner cap and the ink guard section of the fountain pen.When the cap is removed from the fountain pen to permit the pen point tobe used, the open end guard secof the cap 26 is adapted to be slidabl'yengaged over the upper or. head end of the fountain pen barrel toprevent the cap from being misplaced or lost when the same is removedfrom the writing end of the fountain pen.

The present invention isV an improvement in the art ofV fountain pens inthat the section `2'and the barrel 1 are integral with one anthreadedand beveled portion of a fountain Y pen -cap may be ,brought intoengagement for the purpose of removablyY retaining the cap in positionto enclose the feed bar and end point of a fountain pen. The threadedand frictional contact between the ink guard section and the capproduces a non-leakable joint obviating the leakage of ink from theinterior of the ink guard section outwardly.

In the form of the device illustrated in Fig.- ures 1 to 4 inclusive, itwill be noted that the improved fountain pen cap is adapted to besecuredin position in either end of the fountain pen barrel instead ofbeing engaged over the ends of the fountain pen barrel as Vin previousfountain pen constructions. In

the form of the device illustrated in Figure- 5 is will be noted that`the exterior of the fountain pen barrel is freerfrom threads,

as is also the interior of the outer cap 26 since the cap is adaptedtobe retained in position by means of the threaded portion of the innercap 28which is adapted to be projected and engaged into the ink guardsection 6 of the fountainpen.

It will of course be understood that iva-V rious details ofVconstruction may bevaried through a wide range without departing fromthe principlesV ofv this invention and it is therefore not the purposeto limit the patent granted hereon otherwise than necessitated v by thescope of the appended claim,

I claim as my invention:

A fountain pen comprising a barrel, a tubular member removably securedon one end of said barrel, forming a continuation thereof, apartitionmember in said tubular member, a pin secured on said part1t1on,a

closure disk slidable on said pin, springV means between said partitionand said disk urging said disk to normally close an end of said tubularmember, and a'fountain pen cap having an end threadedly entered in l theend of said tubular member forcingsaid disk inwardly against saidspring.

In testimony whereof I have hereunto sub1 scribed myname at Chicago,Cook County,

Illinois.

fsoLcMoNM. SAGER.

